Valve-lifter.



' F. FISCHER.

, VALVE LIFTER. APPLICATION FILED DEG. 23. 1913.

Patented Feb. 9, 1915.

FREDBIK FISCHER, 033 NEW YORK, N. Y.

VALVE-LIFTER.

Spenification of Letters Patent.

Patented Feb. 9, 1915.

Application filed December 23. 1913. Serial No. 808,479.

To all whom it may concern:

lie 1t known that I, FREDRIK FISCHER, a

citizen of the United States, residing at- Bronx, in the county oi New York and State oi, New York, have invented certain newand useful Improvements in Valve- Litters; and I do hereby declare the following to he a full, clear,'and exact description of the invention, such as will enable others skilled in the art to which it appertaius to make and use the same.

This invention comprehends improvements in valve lifters and relates more particularly to those which are espe ially designed for use in c nnection with internal combustion engines to raise valves of the puppet type.

One of the objects of the invention is to provide a valve litter of extremely simple construction, cheap to manufacture and which may be easily and quickly adjusted to compensate for wear.

Another and more specific object of the invention is to provide a valve lifter which may be very easily assembled and disassembled and which includes a body slidable through a sleeve or guide and a ball carried by the body for engagement with a cam.

The common type of valve litter now in general use includes a sliding body, a guide therefor, and a roller journaled within a slot formed in the lower end of the body and working within a corresponding slot formed in the guide. This roller prevents the body turning within the guide and very quickly wears its pivot so that constant adjustment and replacement of different parts is necessary.

My invention aims to provide a superior device by substituting a ball in place of the roller so that the body may be left free to turn within the guide so as to wear evenly and to dispense with the pivot pin.

lVith these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinaftefmore fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which- Figure 1 is a longitudinal sectional view through the improved valve lifter, showing also a puppet valve and cam, and Fig. 2 is a horizontal sectioi' takeir on the plane of line oi Fig.1.

teferring indetailto the drawings by numerals. 1 designates the cylindrical body of my improved valve litter, said body being externally threaded adjacent its lower end, as indicated by the numeral 2, and slidable through a guide sleeve 3 which is formed intermediate its ends with a supporting flange An axial recess 5 is formed in the upper end of'the body 1 and is internally threaded for engagement .witha machine screw (3, said screw being locked in different positions by means of a jam nut 7 which engages the upper end of the body.

The lower endof the body is formed with an axial recess 8 in which is fitted a cylindrical rod or bar 9, said rod projecting a slight distance below the lower end of the body and having its projected extremity recessed, as indicated by the numeral 10 to form, a socket for engagement by a ball '11. The ball is slightly smaller in diameter than the threaded end of the body and is held by a cage 12, said cage being formed with the cylindrical chamber 13 which is internally threaded for engagement with the threaded portion 2 of the body. The chamber 13 is of a reduced diameter adjacent its lower end, as indicated by the numeral 14, and engages the ball 11 below its horizontal diametrical plane, A look nut 15 is threaded on the portion of the body for engagement with the top of the cage to prevent a rotation of the latter relative to the body. A bore 10 connects the recesses 5 and 8 and allows for the insertion of a tool when it is desired to drive the rod 9 from the recess 8.

The machine screw 6 may be easily adjusted to cause the valve 17 'to be properly lifted as the cam 18 lifts the ball 11. As the ball. or rod 9, of both wear, the cage 12 may be threaded farther upon the body so as to hold the ball properly in engagement with the rod 9. All of the parts of the lifter which are likely to wear, are preferably made of hardened steel. It will be noted that the ball is free to rotate within the cage 12 so that it will wear evenly and that the body is-free to rotate within the guide sleeve 3, which is stationary. It willbe apparent that my valve litter may be easily assembled construction, combination and arrangen'lent of parts may be made without departing from the scope and spirit of the invention as claimed.

.Having thus described my invention, 1

claim 1. In a. valve lifter, a body having an axial recess formed in one end thereof, a bore extending through the body and communicating with said recess, abearing element fitted within the recess and projecting beyond one end of the body, the projecting extremity of said bearing element being recessed to form a socket, a ball engaging in said socket, and a cage adjustably secured to the body to,hold the ball against the bearing element.

2. A valve lifter including a body, said body being provided with an axial threaded recess in one end and having a longitudinal bore communicating with the recess, a screw threaded reduced extension on the opposite end of the body, said extension having an axial recess, the inner end of the last named recess communicating with the bore of the body, a bearing element arranged to fit within the recess, the outer end of the bearing element being concaved and forming a socket, a ball rotatable in this socket in the bearing element, a cage threaded on the cylindrical extension and arranged to hold the ball in position against the bearing element and a lock-nut threaded on the extension to hold the cage against accidental movement.

In testimony whereof I aflix my signature in presence of two witnesses.

FREDRIK FISCHER. *Witnesses SAMUEL P. VVATSON, I LEVI W. TERHUNE. 

